一些有用的资料-汇总一下 对绘图,学习等有很大帮助

管壳式换热器设计图纸
http://co.163.com/forum/content/1832_717954_1.htm

AutoCAD高级教程
http://co.163.com/forum/content/1831_716414_1.htm

压焓图 制冷系统图
http://co.163.com/forum/content/1841_716320_1.htm

热泵热水器瞬态特性研究
http://co.163.com/forum/content/1830_719749_1.htm

cad经典教程
http://co.163.com/forum/content/1783_719685_1.htm

phoshop电子书
http://co.163.com/forum/content/1783_717008_1.htm

cad命令速查
http://co.163.com/forum/content/1783_719700_1.htm